Me and my boyfriend were grinding naked 2 weeks ago but he did not penetrate in me but he came in my panties(nowhere near my vaginal opening)and I cleaned it with a tissue. I also don’t know if I have PMS symptoms or pregnancy symptoms? I get back aches and my boobs hurt and I get stomach cramps and white discharge?

edit:forgot to mention that he barely touched my entrance bc it hurt a lot and I don’t remember if he had precum